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path: root/usb/usb-do-not-print-eshutdown-message-if-usb-at-otg-device-mode.patch
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Diffstat (limited to 'usb/usb-do-not-print-eshutdown-message-if-usb-at-otg-device-mode.patch')
-rw-r--r--usb/usb-do-not-print-eshutdown-message-if-usb-at-otg-device-mode.patch36
1 files changed, 36 insertions, 0 deletions
diff --git a/usb/usb-do-not-print-eshutdown-message-if-usb-at-otg-device-mode.patch b/usb/usb-do-not-print-eshutdown-message-if-usb-at-otg-device-mode.patch
new file mode 100644
index 00000000000000..c317a6f5fb7a40
--- /dev/null
+++ b/usb/usb-do-not-print-eshutdown-message-if-usb-at-otg-device-mode.patch
@@ -0,0 +1,36 @@
+From linux-usb-owner@vger.kernel.org Wed Oct 6 13:37:13 2010
+From: Peter Chen <peter.chen@freescale.com>
+To: linux-usb@vger.kernel.org
+CC: Peter Chen <peter.chen@freescale.com>
+Subject: USB: do not print -ESHUTDOWN message if usb at otg device mode
+Date: Mon, 27 Sep 2010 16:43:25 +0800
+Message-ID: <1285577005-24081-1-git-send-email-peter.chen@freescale.com>
+
+From: Peter Chen <peter.chen@freescale.com>
+
+At otg device mode, the otg host resume should do no-op during
+system resume, otherwise, the otg device will be treated as a
+host for enumeration.
+
+So, the otg host driver returns -ESHUTDOWN if it detects the
+current usb mode is device mode. The host driver has to return
+-ESHUTDOWN, otherwise, the usb_hc_died will be called.
+
+Signed-off-by: Peter Chen <peter.chen@freescale.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
+
+---
+ drivers/usb/core/driver.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/drivers/usb/core/driver.c
++++ b/drivers/usb/core/driver.c
+@@ -1337,7 +1337,7 @@ int usb_resume(struct device *dev, pm_me
+ /* Avoid PM error messages for devices disconnected while suspended
+ * as we'll display regular disconnect messages just a bit later.
+ */
+- if (status == -ENODEV)
++ if (status == -ENODEV || status == -ESHUTDOWN)
+ status = 0;
+ return status;
+ }